CVE-2023-39997: WordPress Popup by Supsystic plugin <= 1.10.19 - Broken Access Control Vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-13 · updated 2026-06-17
Weakness: CWE-862

Description

Missing Authorization vulnerability in supsystic.com Popup by Supsystic allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Popup by Supsystic: from n/a through 1.10.19.

Affected products

supsystic Popup by Supsystic: before 1.10.20 — fixed in 1.10.20

How to fix

Upgrade to a fixed version: supsystic Popup by Supsystic 1.10.20. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/wordpress/plugin/popup-by-supsystic/vulnerability/wordpress-popup-by-supsystic-plugin-1-10-19-broken-access-control-vulnerability?_s_id=cve

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